30534421 has 8 divisors (see below), whose sum is σ = 31059000. Its totient is φ = 30014400.

The previous prime is 30534407. The next prime is 30534433. The reversal of 30534421 is 12443503.

It can be written as a sum of positive squares in 4 ways, for example, as 16200625 + 14333796 = 4025^2 + 3786^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30534421 - 2⁵ = 30534389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30534392 and 30534401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30534821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14035 + ... + 16063.

It is an arithmetic number, because the mean of its divisors is an integer number (3882375).

Almost surely, 2^30534421 is an apocalyptic number.

It is an amenable number.

30534421 is a deficient number, since it is larger than the sum of its proper divisors (524579).

30534421 is a wasteful number, since it uses less digits than its factorization.

30534421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 30534421 is about 5525.7959607644. The cubic root of 30534421 is about 312.5574797735.

Adding to 30534421 its reverse (12443503), we get a palindrome (42977924).

The spelling of 30534421 in words is "thirty million, five hundred thirty-four thousand, four hundred twenty-one".